This is my +1 for this request. I would like to go a bit further and be able to "drag/drop" alternates in place so it is easier to step through. Sorting by name is definitely a must, "drag/drop" as icing on the cake.
Additionally, I would like to be able to resize the alternate area a bit. Somewhat small on my screen and with so much real estate to go around I would love to be able to resize the alternate window.